CN205637034U - Accurate class diverging device that abandons of city initial stage rainwater - Google Patents
Accurate class diverging device that abandons of city initial stage rainwater Download PDFInfo
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- CN205637034U CN205637034U CN201620380211.7U CN201620380211U CN205637034U CN 205637034 U CN205637034 U CN 205637034U CN 201620380211 U CN201620380211 U CN 201620380211U CN 205637034 U CN205637034 U CN 205637034U
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- abandoned stream
- rainwater
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- abandoning
- chamber
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Abstract
The utility model discloses an accurate class diverging device that abandons of city initial stage rainwater, including setting up at device water inlet that installs upper portion and the collection mouth that installs the middle part, the stream board is kept off to inside still being provided with of device, it sets up in collecting a mouthful below to keep off stream board top, the bottom sets up bottom surface in the device, keep off the cavity of the lateral wall component at stream board and collection mouthful place and split into cavity and lower cavity by the baffle, be provided with the small opening on the baffle, fender stream board lower part transversely is provided with abandons a class board, class board is abandoned and a class board will be kept off, collect mouthful cavity that relative lateral wall constitutes and split into class chamber of abandoning of holding class chamber with being located the below that is located the top, abandon the external flow tube of abandoning in class chamber, abandon to be provided with on class board and abandon the head piece, be provided with the valving that is used for control to abandon head piece and small opening switching in the device. The beneficial effect of the utility model: under the any rainfall circumstances in any place, realize automatic accurate the abandoning of initial stage rainwater and flow and back end rainwater automatic collection, effectively shunt the rainwater, prevent that the pipeline from pouring in down a chimney, guarantee safety discharging, the maintenance is safeguarded conveniently.
Description
Technical field
This utility model relates to field of urban drainage, a kind of in rain water collecting system by the part flow arrangement of accurate for early stage contaminated rain water abandoned stream.
Background technology
It is that row's block is put soon that urban construction in the past solves the thinking of rainwater emission problem, and rainwater is not made any process and is directly discharged into municipal administration storm sewer system after being collected by inlet for stom water, be ultimately discharged into natural water area by this system.This processing method does not consider the collection recycling of rainwater, waste the fresh water natural resources of preciousness, the most comprehensive relevant documents and materials conclusion, city initial rainwater is a kind of polluter containing high density pollution thing, it is directly discharged into natural water without process is the major reason that present stage natural water pollutes aggravation, and the pollution problem thus caused is paid high attention to；Upper problem is solved for comprehensive, country proposes " sponge city " this concept, i.e. for the rain flood management concept of modern city design, urban infrastructure is allowed to can adapt to environmental change, elastic can tackle the impact that rainwater brings, collect rainwater when rainfall, be detained rainwater, purifying rainwater, savings rainwater, infiltration rainwater, the most again the rainwater release of storage is utilized；
When carrying out rainwater purification savings and utilizing, in view of the polluting property of early-stage rainwater, it can not be purified rapidly the short time, so ordinary circumstance is to be passed through flow abandoning apparatus abandoned stream, abandoned stream Water in Rainwater Drainage enters municipal administration sewage network and enters sewage treatment plant's process, or focuses on pipe special.When designing the rain water drainage value of early-stage rainwater stream abandoning device, owing to rainfall design flow its early-stage rainwater stream abandoning amount of difference of different cities is also the most different, this just requires that the rain water drainage value of early-stage rainwater stream abandoning device can regulate；How also have allows flow abandoning apparatus in the case of different rainfall magnitudes, all can press the accurate abandoned stream of abandoned stream value of device design, this is the problem that existing many early-stage rainwater stream abandoning devices are all difficult to overcome, they are in the case of long-time light rain, can not automatically collect the rainwater that back segment is clean, when heavy rain, the most often abandoned stream is the most thorough.
Utility model content
The purpose of this utility model is: provides a kind of part flow arrangement by accurate for early stage contaminated rain water abandoned stream in rain water collecting system, is realized by following technical proposals:
A kind of city initial rainwater accurate abandoning and diverting flow device, including the collection port being arranged in the middle part of the device water inlet on device top and device, flow-stopping plate it is additionally provided with inside device, flow-stopping plate top is arranged at below collection port, bottom is arranged at device inner bottom surface, the chamber that the sidewall at flow-stopping plate and collection port place is constituted is divided into upper chamber and lower chambers by dividing plate, small opening it is provided with on dividing plate, flow-stopping plate lower, transverse is provided with abandoned stream plate, abandoned stream plate is by flow-stopping plate, the chamber of the sidewall composition that collection port is relative is divided into above storing stream chamber and be positioned at the abandoned stream chamber of lower section, abandoned stream chamber external abandoned stream pipe, abandoned stream mouth it is provided with on abandoned stream plate, it is provided with in device for controlling abandoned stream mouth and the valving of small opening opening and closing.
Described valving is for controlling the first ball-cock assembly of small opening opening and closing and for controlling the second ball-cock assembly of abandoned stream mouth opening and closing, being additionally provided with magnetic attracting valve below abandoned stream mouth.The ball float of the first ball-cock assembly is arranged at storage stream intracavity, bulb stopper is arranged in upper chamber, after storing stream intracavity liquid level rising, small opening is closed by ball-cock assembly, liquid level enters upper chamber's water-retention after covering flow-stopping plate top, after the liquid level stored in stream chamber declines, the first ball-cock assembly opens small opening, and in upper chamber, the rainwater of savings can enter lower chambers savings；Magnetic attracting valve is in closure state at ordinary times, when liquid level overall in device reach higher than flow-stopping plate top, less than a certain default liquid level bottom collection port time, magnetic attracting valve is opened under rainwater pressure, store stream intracavity rainwater to discharge from abandoned stream mouth, magnetic attracting valve is with liquid level drops slowly closing, completely close to the approximation emptying of intracavity liquid level, close abandoned stream mouth, store stream chamber and restart water-retention；The ball float of the second ball-cock assembly is arranged at bottom chamber, and bulb stopper is arranged in storage stream chamber, and the rainwater of upper chamber constantly enters lower chambers savings, and lower chambers water level raises the second ball-cock assembly and closes abandoned stream mouth, and flow abandoning apparatus stops abandoned stream.
Device middle and upper part is provided with floodwater releasing port, higher than collection port top bottom floodwater releasing port.When meeting with heavy showers, as collection port and abandoned stream pipe cannot shunt rapidly liquid level, for avoiding rainwater to pour in down a chimney pipeline, can be discharged by floodwater releasing port higher than the liquid level at collection port top.
Device top is provided with access hole, and attendant can enter in device from access hole and clear up, and facilitates repair and maintenance.
Being provided with filtration Hanging Basket below device water inlet, collection port entry position is provided with drainage screen.Filtering Hanging Basket uses high-strength material to make, impact resistance degree is high, also can will not rupture by filters under heavy showers effect, in addition to rainwater is carried out first filtration, personnel or foreign material are had to fall into below device prevented also from top, collection port entry position is provided with drainage screen simultaneously, the rainwater entering collection port can be carried out secondary filter.
The through leakage mouth storing stream chamber and lower chambers it is provided with on flow-stopping plate, and the leakage fluid dram in through lower chambers and abandoned stream chamber, leakage mouth and leakage fluid dram area equation.When lower chambers starts water-retention, the flow discharged from leakage fluid dram can be supplemented from storing stream intracavity by leakage mouth.After rain stops, the rainwater of storage stream intracavity can pass through leakage mouth-lower chambers-leakage fluid dram-abandoned stream chamber-abandoned stream pipe order and slowly discharge.
When meeting with extreme heavy showers, rainwater quickly fills with storage stream chamber, and magnetic attracting valve is opened, abandoned stream mouth abandoned stream, owing to inflow is more than the abandoned stream mouth abandoned stream water yield, water level does not declines, hydraulic pressure is excessive causes magnetic attracting valve to close, and causes device to be in abandoned stream state all the time, it is impossible to carry out rainwater-collecting.Therefore between the sidewall at flow-stopping plate top and collection port place, it is provided with drainage tube.When the above-described situation occurs, being directly discharged into lower chambers higher than the water level of abandoned stream plate from drainage tube, make the second ball-cock assembly close rapidly abandoned stream mouth, guide enters rainwater-collecting state.For avoiding pipeline to pour in down a chimney, the rainwater exceeding collection port enters municipal drainage pipeline from floodwater releasing port.
Upper chamber's water inlet is provided with dismountable blend stop, flow can be stored to adjust upper chamber's maximum by adjusting the number of blend stop, thus control device total abandoned stream amount, increasing the blend stop of upper chamber's water inlet, can increase upper chamber and store flow, the flow the most every time flowing into lower chambers is bigger, it is shorter that lower chambers ball float floats the required time, namely the abandoned stream time is shorter, and abandoned stream amount is less, otherwise the most then abandoned stream amount is big.
Collection port processes pipeline with rainwater-collecting and is connected, floodwater releasing port is connected with municipal drainage pipeline, abandoned stream chamber external pipe, is connected with municipal administration blow-off line, it is provided with single-way flow restricting valve on abandoned stream pipe, prevents the sewage in municipal administration blow-off line from entering device internal contamination equipment.
Workflow of the present utility model is as follows:
1. under original state, magnetic attracting valve is closed, and when rainwater is after device water inlet enters in device, is storing stream intracavity savings, and sub-fraction rainwater enters lower chambers by leakage mouth, enters abandoned stream chamber by leakage fluid dram immediately and is gone out by abandoned stream bank of tubes.
2. liquid level continues to rise, and makes the first ball-cock assembly close small opening, after liquid level exceedes upper chamber's water inlet, enters upper chamber and starts water-retention.
3. when liquid level rises to magnetic attracting valve preset value, magnetic attracting valve is opened, and stores stream intracavity liquid level and is discharged rapidly by abandoned stream mouth, liquid level declines, and the first ball-cock assembly opens small opening, and in upper chamber, the rainwater of savings enters lower chambers, after storing the intimate emptying of stream intracavity liquid level, magnetic attracting valve is closed, and stores stream chamber and restarts water-retention.
4. after step 3 repeats n times, the rainwater that abandoned stream mouth is discharged has reached city and has preset early-stage rainwater stream abandoning amount requirement, can start to collect follow-up cleaning rainwater, now bottom chamber rainwater puts aside the closedown preset value of the second ball-cock assembly, abandoned stream mouth is closed by the second ball-cock assembly, magnetic attracting valve simultaneously closes off, and whole liquid level starts persistently to rise, and rainwater enters rainwater-collecting pipeline from collection port.
5., when meeting with heavy showers, for avoiding pipeline to pour in down a chimney, the rainwater exceeding collection port top enters municipal drainage pipeline from floodwater releasing port.
6. after rainfall stops, not stopping along with leakage fluid dram to discharge rainwater, overall liquid level continuous decrease, first discharge and store stream intracavity liquid level, bottom chamber rainwater drains the most therewith, and the second ball-cock assembly is opened, and whole device restPoses, and waits rainfall abandoned stream next time.In device, rainwater is discharged from leakage fluid dram, cause the second ball-cock assembly and open abandoned stream mouth, need about 30 minutes time, in the occasion that shower in summer more rainfall gap is shorter, when next rainfall comes interim, and device is still in slow hull-borne, after rain stream supplements, device will not abandoned stream, directly carrying out rainwater-collecting, the rainwater making this part the cleanest can will not be collected by abandoned stream and utilize rainwater to greatest extent.
7. number of repetition N in step 4, depend on city initial rainwater this numerical value of abandoned stream amount, can be obtained by city planning design, after converting with this device internal structure specification, the flow needing abandoned stream is V, storing the stream chamber once maximum flow that stores is V1, it is V2 that upper chamber's maximum stores flow, and it is V3 that lower chambers meets the flow of the second ball-cock assembly Guan Bi abandoned stream mouth, and each chamber arranges and should meet, N=V/V1=V3/V2, rounds up.
The beneficial effects of the utility model are, early-stage rainwater stream abandoning value according to the planned setting in each city, in the case of the most any rainfall, early-stage rainwater accurate abandoned stream and back segment automatic rain water collection automatically all it is capable of not against manpower or electric power, can effectively shunt rainwater during Severe rainstorm, prevent pipeline from pouring in down a chimney, it is ensured that flood passage safety, its light structure is compact reliably simultaneously, and repair and maintenance is convenient.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model；
Fig. 2 is the enlarged diagram at Figure 1A；
Fig. 3 is the enlarged diagram that Figure 1B goes out；
Fig. 4 is the top view of Fig. 1；
Fig. 5 is the schematic diagram of abandoned stream incipient stage；
Critical state schematic diagram when Fig. 6 is to arrive magnetic attracting valve preset value after liquid level rises；
View when Fig. 7 is first abandoned stream；
Start to collect view during rainwater after the accurate abandoned stream of Fig. 8；
Fig. 9 is the flood discharge schematic diagram under heavy showers state；
In figure, 1 is device water inlet, and 2 is access hole, and 3 for filtering Hanging Basket, and 4 is collection port, 5 is drainage screen, and 6 is floodwater releasing port, and 7 is flow-stopping plate, and 8 is upper chamber, 9 is small opening, and 10 is the first ball-cock assembly, and 11 for storing stream chamber, and 12 is lower chambers, 13 is the second ball-cock assembly, and 14 is magnetic attracting valve, and 15 is abandoned stream mouth, and 16 is abandoned stream chamber, 17 is abandoned stream pipe, and 18 is leakage mouth, and 19 is leakage fluid dram, and 20 is single-way flow restricting valve, 21 is blend stop, and 22 is drainage tube, and 23 is dividing plate, and 24 is abandoned stream plate.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, this utility model is further described.
nullWith reference to shown in Fig. 1-Fig. 4，A kind of city initial rainwater accurate abandoning and diverting flow device，Including the collection port 4 being arranged in the middle part of the device water inlet 1 on device top and device，Flow-stopping plate 7 it is additionally provided with inside device，Flow-stopping plate 7 top is arranged at below collection port 4，Bottom is arranged at device inner bottom surface，The chamber that the sidewall at flow-stopping plate 7 and collection port 4 place is constituted is divided into upper chamber 8 and lower chambers 12 by dividing plate 23，Small opening 9 it is provided with on dividing plate 23，Flow-stopping plate 7 lower, transverse is provided with abandoned stream plate 24，Abandoned stream plate 24 is by flow-stopping plate 7、The chamber of the sidewall composition that collection port 4 is relative is divided into above storing stream chamber 11 and be positioned at the abandoned stream chamber 16 of lower section，Abandoned stream chamber 16 external abandoned stream pipe 17，Abandoned stream mouth 15 it is provided with on abandoned stream plate 7，It is additionally provided with as controlling the first ball-cock assembly 10 of small opening 9 opening and closing and for controlling the second ball-cock assembly 13 of abandoned stream mouth 15 opening and closing，Magnetic attracting valve 14 it is additionally provided with below abandoned stream mouth 15.Device middle and upper part is provided with floodwater releasing port 6, and higher than collection port 4 top bottom floodwater releasing port 6, device top is provided with access hole 2.Filtration Hanging Basket 3 it is provided with below device water inlet.Collection port 4 entry position is provided with drainage screen 5.The through leakage mouth 18 storing stream chamber 11 and lower chambers 12 it is provided with on flow-stopping plate 7, and the leakage fluid dram 19 in through lower chambers 12 and abandoned stream chamber 16, leakage mouth 18 and leakage fluid dram 19 area equation.It is provided with drainage tube 22 between the sidewall at flow-stopping plate 7 top and collection port 4 place.Dismountable blend stop 21 it is provided with on upper chamber 8 water inlet.Collection port 4 processes pipeline with rainwater-collecting and is connected, and floodwater releasing port 6 is connected with municipal drainage pipeline, abandoned stream chamber 16 external abandoned stream pipe 17, is connected with municipal administration blow-off line, abandoned stream pipe is provided with single-way flow restricting valve 20.
Workflow of the present utility model:
1. under original state, magnetic attracting valve 14 is closed, and is filtered after Hanging Basket 3 when rainwater enters in device from device water inlet 1, savings in storing stream chamber 11, sub-fraction rainwater enters lower chambers 12 by leakage mouth 18, enters abandoned stream chamber 16 by leakage fluid dram 19 immediately and is discharged by abandoned stream pipe 17.
2. liquid level continues to rise, and makes the first ball-cock assembly 10 close small opening 9, after liquid level exceedes flow-stopping plate 7 top, enters upper chamber 8 and starts water-retention.
3. when liquid level rises to magnetic attracting valve 14 preset value, magnetic attracting valve 14 is opened, in storing stream chamber 11, rainwater is discharged rapidly by abandoned stream mouth 15, liquid level declines, first ball-cock assembly 10 opens small opening 9, and in upper chamber 8, the rainwater of savings enters lower chambers 12, after in storage stream chamber 11, liquid level is close to emptying, magnetic attracting valve 14 is closed, and stores stream chamber 11 and restarts water-retention；Upper chamber's maximum is stored flow and can be controlled by the number of blend stop, blend stop number is the most, it is the biggest that upper chamber's maximum stores flow, the water yield of disposable entrance lower chambers is the biggest, closing electromagnetic valve needs abandoned stream number of times the fewest, thus reach to control the purpose of abandoned stream total amount, realize adapting to the different cities different demands to abandoned stream amount with this；
4. after step 3 repeats n times, the rainwater discharged has reached city and has preset early-stage rainwater stream abandoning amount requirement, can start to collect follow-up cleaning rainwater, now in lower chambers 12, rainwater puts aside 13 closedown preset values of the second ball-cock assembly, abandoned stream mouth 15 is closed by the second ball-cock assembly 13, magnetic attracting valve 14 simultaneously closes off, and whole liquid level starts persistently to rise, and rainwater enters rainwater-collecting pipeline after collection port 4 is filtered again by drainage screen 5.
5. when meeting with extreme heavy showers, rainwater quickly fills with storage stream chamber 11, magnetic attracting valve 14 is opened, abandoned stream mouth 15 abandoned stream, owing to inflow is more than the abandoned stream mouth 15 abandoned stream water yield, water level does not declines, current are directly discharged into lower chambers 12 from drainage tube 22, make the second ball-cock assembly 13 close rapidly abandoned stream mouth, and guide enters rainwater-collecting state, for ensureing flood passage safety, the rainwater exceeding collection port top enters municipal drainage pipeline from floodwater releasing port 6.
6. after rainfall stops, along with leakage fluid dram 19 does not stop to discharge rainwater, overall liquid level continuous decrease, first discharging and store rainwater in stream chamber 11, in lower chambers 12, rainwater drains the most therewith, and the second ball-cock assembly 13 is opened, whole device restPoses, and waits rainfall abandoned stream next time.In device, rainwater is discharged from leakage fluid dram 19, cause the second ball-cock assembly 13 and open abandoned stream mouth 15, need about 30 minutes time, in the occasion that shower in summer more rainfall gap is shorter, when next rainfall comes interim, and device is still in slow hull-borne, after rain stream supplements, device will not abandoned stream, directly carrying out rainwater-collecting, the rainwater making this part the cleanest can will not be collected by abandoned stream and utilize rainwater to greatest extent.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (10)
1. a city initial rainwater accurate abandoning and diverting flow device, it is characterised in that include being arranged on device top device water inlet and
Collection port in the middle part of device, is additionally provided with flow-stopping plate inside device, flow-stopping plate top is arranged at below collection port, and bottom is arranged
In device inner bottom surface, the chamber that the sidewall at flow-stopping plate and collection port place is constituted is divided into upper chamber and lower chambers by dividing plate, every
Being provided with small opening on plate, flow-stopping plate lower, transverse is provided with abandoned stream plate, and abandoned stream plate is by sidewall structure relative to flow-stopping plate, collection port
The chamber become is divided into above storing stream chamber and be positioned at the abandoned stream chamber of lower section, abandoned stream chamber external abandoned stream pipe, and abandoned stream plate sets
It is equipped with abandoned stream mouth, is provided with in device for controlling abandoned stream mouth and the valving of small opening opening and closing.
2. a kind of city initial rainwater accurate abandoning and diverting flow device as claimed in claim 1, it is characterised in that described valving is
For controlling the first ball-cock assembly of small opening opening and closing and for controlling the second ball-cock assembly of abandoned stream mouth opening and closing, also set up below abandoned stream mouth
There is magnetic attracting valve.
3. a kind of city initial rainwater accurate abandoning and diverting flow device as claimed in claim 2, it is characterised in that flow-stopping plate top is less than
Bottom collection port, the upper end of flow-stopping plate near collection port place sidewall and upright position away from the water exit position of device water inlet,
Middle part be tilted towards collection port to sidewall, lower end is vertically arranged at bottom of device.
4. a kind of city initial rainwater accurate abandoning and diverting flow device as claimed in claim 1, it is characterised in that device middle and upper part is arranged
Having floodwater releasing port, higher than collection port top bottom floodwater releasing port, device top is provided with access hole.
5. a kind of city initial rainwater accurate abandoning and diverting flow device as claimed in claim 1, it is characterised in that below device water inlet
It is provided with filtration Hanging Basket.
6. a kind of city initial rainwater accurate abandoning and diverting flow device as claimed in claim 1, it is characterised in that collection port entry position
It is provided with drainage screen.
7. a kind of city initial rainwater accurate abandoning and diverting flow device as claimed in claim 1, it is characterised in that be provided with on flow-stopping plate
The through leakage mouth storing stream chamber and lower chambers, and the leakage fluid dram in through lower chambers and abandoned stream chamber, leakage mouth and leakage fluid dram area phase
Deng.
8. a kind of city initial rainwater accurate abandoning and diverting flow device as claimed in claim 1, it is characterised in that flow-stopping plate top and receipts
It is provided with drainage tube between the sidewall at Ji Kou place.
9. a kind of city initial rainwater accurate abandoning and diverting flow device as claimed in claim 1, it is characterised in that on upper chamber's water inlet
It is provided with dismountable blend stop.
10. a kind of city initial rainwater accurate abandoning and diverting flow device as claimed in claim 1, it is characterised in that collection port and rainwater collection
Collection processes pipeline and is connected, and floodwater releasing port is connected with municipal drainage pipeline, abandoned stream chamber external abandoned stream pipe, with municipal administration blow-off line
It is connected, abandoned stream pipe is provided with single-way flow restricting valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620380211.7U CN205637034U (en) | 2016-04-29 | 2016-04-29 | Accurate class diverging device that abandons of city initial stage rainwater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620380211.7U CN205637034U (en) | 2016-04-29 | 2016-04-29 | Accurate class diverging device that abandons of city initial stage rainwater |
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| CN205637034U true CN205637034U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620380211.7U Active CN205637034U (en) | 2016-04-29 | 2016-04-29 | Accurate class diverging device that abandons of city initial stage rainwater |
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| CN (1) | CN205637034U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780908A (en) * | 2016-04-29 | 2016-07-20 | 四川牧雨环保科技有限公司 | Device for accurately discarding and separating urban initial rainwater |
| CN106400944A (en) * | 2016-11-17 | 2017-02-15 | 泰州晟禾水处理设备制造有限公司 | Initial rainwater separating, collecting and processing device of rainwater and sewage confluence pipe and use method thereof |
| CN106759765A (en) * | 2016-11-28 | 2017-05-31 | 河海大学 | A kind of rain dirt circulatory system based on sponge city |
-
2016
- 2016-04-29 CN CN201620380211.7U patent/CN205637034U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780908A (en) * | 2016-04-29 | 2016-07-20 | 四川牧雨环保科技有限公司 | Device for accurately discarding and separating urban initial rainwater |
| CN105780908B (en) * | 2016-04-29 | 2018-07-06 | 四川牧雨环保科技有限公司 | A kind of accurate abandoning and diverting flow device of city initial rainwater |
| CN106400944A (en) * | 2016-11-17 | 2017-02-15 | 泰州晟禾水处理设备制造有限公司 | Initial rainwater separating, collecting and processing device of rainwater and sewage confluence pipe and use method thereof |
| CN106759765A (en) * | 2016-11-28 | 2017-05-31 | 河海大学 | A kind of rain dirt circulatory system based on sponge city |
| CN106759765B (en) * | 2016-11-28 | 2019-03-01 | 河海大学 | A kind of rain dirt circulatory system based on sponge city |
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